EP0497433A2 - Système de démodulation à phase commandée pour communication numérique - Google Patents

Système de démodulation à phase commandée pour communication numérique Download PDF

Info

Publication number
EP0497433A2
EP0497433A2 EP92201171A EP92201171A EP0497433A2 EP 0497433 A2 EP0497433 A2 EP 0497433A2 EP 92201171 A EP92201171 A EP 92201171A EP 92201171 A EP92201171 A EP 92201171A EP 0497433 A2 EP0497433 A2 EP 0497433A2
Authority
EP
European Patent Office
Prior art keywords
carrier
ratio
output
circuit
digital
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92201171A
Other languages
German (de)
English (en)
Other versions
EP0497433B1 (fr
EP0497433A3 (en
Inventor
Shousei C/O Nec Corporation Yoshida
Susumu C/O Nec Corporation Otani
Toshiya C/O Nec Corporation Todoroki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP15604587A external-priority patent/JPS64844A/ja
Priority claimed from JP62-156044A external-priority patent/JPH01843A/ja
Priority claimed from JP16210987A external-priority patent/JPS645248A/ja
Priority claimed from JP62175658A external-priority patent/JPS6418339A/ja
Application filed by NEC Corp filed Critical NEC Corp
Publication of EP0497433A2 publication Critical patent/EP0497433A2/fr
Publication of EP0497433A3 publication Critical patent/EP0497433A3/en
Application granted granted Critical
Publication of EP0497433B1 publication Critical patent/EP0497433B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/26—Measuring noise figure; Measuring signal-to-noise ratio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0016—Stabilisation of local oscillators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0063—Elements of loops
    • H04L2027/0067—Phase error detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0071—Control of loops
    • H04L2027/0075—Error weighting

Definitions

  • the output of the demodulator is an analog signal having eye patterns at the recovery timing of symbols which corresponds to signal points.
  • Absolute value circuit 2 converts the data d i into an absolute value
  • MSB most significant bit
  • A/D converter 1 The output of A/D converter 1 is delayed by circuit 20 by an amount equal to the total delay introduced by decoder 21 and encoder 22 so that the inputs to the polarity inverter 23 are rendered time-coincident with each other.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Analogue/Digital Conversion (AREA)
EP92201171A 1987-06-23 1988-06-22 Système de démodulation à phase commandée pour communication numérique Expired - Lifetime EP0497433B1 (fr)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP15604587A JPS64844A (en) 1987-06-23 1987-06-23 C/n measuring circuit
JP62-156044A JPH01843A (ja) 1987-06-23 Ｃ／ｎ測定回路
JP156044/87 1987-06-23
JP156045/87 1987-06-23
JP16210987A JPS645248A (en) 1987-06-29 1987-06-29 C/n measuring circuit
JP162109/87 1987-06-29
JP62175658A JPS6418339A (en) 1987-07-14 1987-07-14 Pseudo synchronizing detecting circuit
JP175658/87 1987-07-14
EP88305685A EP0296822B1 (fr) 1987-06-23 1988-06-22 Détecteur du rapport porteuse/bruit pour systèmes de transmission numériques

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP88305685.5 Division 1988-06-22

Publications (3)

Publication Number Publication Date
EP0497433A2 true EP0497433A2 (fr) 1992-08-05
EP0497433A3 EP0497433A3 (en) 1992-09-23
EP0497433B1 EP0497433B1 (fr) 1995-09-20

Family

ID=27473388

Family Applications (2)

Application Number Title Priority Date Filing Date
EP92201171A Expired - Lifetime EP0497433B1 (fr) 1987-06-23 1988-06-22 Système de démodulation à phase commandée pour communication numérique
EP88305685A Expired - Lifetime EP0296822B1 (fr) 1987-06-23 1988-06-22 Détecteur du rapport porteuse/bruit pour systèmes de transmission numériques

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP88305685A Expired - Lifetime EP0296822B1 (fr) 1987-06-23 1988-06-22 Détecteur du rapport porteuse/bruit pour systèmes de transmission numériques

Country Status (5)

Country Link
US (1) US4835790A (fr)
EP (2) EP0497433B1 (fr)
AU (1) AU594621B2 (fr)
CA (1) CA1332450C (fr)
DE (2) DE3886107T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2721778A1 (fr) * 1994-06-23 1995-12-29 France Telecom Procédé d'estimation d'une erreur de phase résiduelle sur les échantillons d'un signal numérique démodulé, et procédé de correction correspondant.

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0748750B2 (ja) * 1988-11-15 1995-05-24 日本電気株式会社 同期復調装置
FR2645373A1 (fr) * 1989-03-28 1990-10-05 Js Telecommunications Procede et dispositif de reduction du bruit sur un signal codable a plusieurs niveaux predetermines
FR2661580B1 (fr) * 1990-04-27 1992-06-12 Alcatel Transmission Procede de recuperation de porteuse pour modulation a grand nombre d'etats et dispositif de mise en óoeuvre de ce procede.
US5208835A (en) * 1990-09-24 1993-05-04 In-Situ, Inc. Automatic frequency control system and method for frequency-shift-key data transmission systems
US5341402A (en) * 1991-02-19 1994-08-23 Tokyo Electric Co., Ltd. Automatic frequency control method and device for use in receiver
WO1992021984A1 (fr) * 1991-05-27 1992-12-10 Advantest Corporation Appareil de mesure de la valeur moyenne d'un signal impulsif
KR960005386B1 (ko) * 1991-06-28 1996-04-24 모토로라 인코포레이티드 적응형 필터에 의한 자동 주파수 제어방법 및 장치
US5233633A (en) * 1991-06-28 1993-08-03 Motorola, Inc. Automatic frequency control by an adaptive filter
US5255290A (en) * 1992-08-21 1993-10-19 Teknekron Communications System, Inc. Method and apparatus for combined frequency offset and timing offset estimation
US5376894A (en) * 1992-12-31 1994-12-27 Pacific Communication Sciences, Inc. Phase estimation and synchronization using a PSK demodulator
US5440582A (en) * 1993-05-28 1995-08-08 Motorola, Inc. Method and apparatus for determining signal usability
US5440590A (en) * 1993-11-01 1995-08-08 Motorola, Inc. Method and apparatus for producing a usable signal from received diverse modulated signals
DE69637911D1 (de) * 1995-07-19 2009-06-04 Nec Corp Diversity-Übertragungssystem mit Kodevielfachzugriff
US6026131A (en) * 1995-12-27 2000-02-15 Laurent; Souef Automatic gain control systems
DE19646164A1 (de) * 1996-11-08 1998-05-14 Deutsche Telekom Ag Verfahren zur Übertragung digitaler Signale
US6115395A (en) * 1996-11-15 2000-09-05 3Com Corporation Method of detecting network impairments for high speed data communication over conventional subscriber lines
US5901173A (en) 1996-12-09 1999-05-04 Raytheon Company Noise Estimator
JPH10190497A (ja) * 1996-12-27 1998-07-21 Fujitsu Ltd Ｓｉｒ測定装置
SE9702370L (sv) * 1997-06-19 1998-12-20 Ericsson Telefon Ab L M Balanserad diversitet
GB2327176B (en) * 1997-07-08 2002-04-24 Ericsson Telefon Ab L M Signal quality measurement
JP3821331B2 (ja) * 1997-10-31 2006-09-13 ソニー株式会社 通信端末装置及びセルラー無線通信システム並びに情報通信方法
JP3392028B2 (ja) * 1997-11-28 2003-03-31 株式会社ケンウッド 階層化伝送ディジタル復調器
US6229847B1 (en) 1997-12-24 2001-05-08 The United States Of America As Represented By The Secretary Of The Navy Signal quality measurement device
US6219095B1 (en) 1998-02-10 2001-04-17 Wavetek Corporation Noise measurement system
ES2204188T3 (es) * 1998-08-28 2004-04-16 Siemens Aktiengesellschaft Procedimiento y dispositivo para la medicion de la calidad de la transmision de un canal de transmision.
US6430237B1 (en) * 1998-11-16 2002-08-06 Transamerica Business Credit Corporation Method for accurate signal-to-interference measurement for wireless communication receivers
JP3968546B2 (ja) * 1998-12-08 2007-08-29 ソニー株式会社 情報処理装置および方法、並びに提供媒体
JP2000341160A (ja) * 1999-05-28 2000-12-08 Matsushita Electric Ind Co Ltd 自己診断モードを有する受信機
JP2000349842A (ja) * 1999-06-02 2000-12-15 Matsushita Electric Ind Co Ltd 衛星放送用の受信機の自己診断方法
FR2796227B1 (fr) * 1999-07-08 2007-05-04 Cit Alcatel Procede d'estimation du rapport signal a bruit dans un recepteur de telecommunications et application de ce procede au controle d'un emetteur
JP3318291B2 (ja) * 1999-08-31 2002-08-26 株式会社環境電磁技術研究所 擬似雑音発生装置
US6397041B1 (en) * 1999-12-22 2002-05-28 Radio Propagation Services, Inc. Broadcast monitoring and control system
US6735538B1 (en) * 2000-03-29 2004-05-11 Advantest Corporation Apparatus and method for measuring quality measure of phase noise waveform
JPWO2002033427A1 (ja) 2000-10-17 2004-02-26 株式会社アドバンテスト ノイズ測定装置、方法、記録媒体
JP3559237B2 (ja) * 2000-11-09 2004-08-25 松下電器産業株式会社 希望波対干渉波電力比測定回路および希望波対干渉波電力比測定方法
US7822154B2 (en) * 2001-04-27 2010-10-26 The Directv Group, Inc. Signal, interference and noise power measurement
US7173981B1 (en) 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US7209524B2 (en) * 2001-04-27 2007-04-24 The Directv Group, Inc. Layered modulation for digital signals
US7184489B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Optimization technique for layered modulation
US7423987B2 (en) * 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
US7245671B1 (en) 2001-04-27 2007-07-17 The Directv Group, Inc. Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
US7471735B2 (en) 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
US8005035B2 (en) * 2001-04-27 2011-08-23 The Directv Group, Inc. Online output multiplexer filter measurement
US7184473B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7502430B2 (en) * 2001-04-27 2009-03-10 The Directv Group, Inc. Coherent averaging for measuring traveling wave tube amplifier nonlinearity
US7151807B2 (en) * 2001-04-27 2006-12-19 The Directv Group, Inc. Fast acquisition of timing and carrier frequency from received signal
US7639759B2 (en) * 2001-04-27 2009-12-29 The Directv Group, Inc. Carrier to noise ratio estimations from a received signal
US7583728B2 (en) * 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7483505B2 (en) * 2001-04-27 2009-01-27 The Directv Group, Inc. Unblind equalizer architecture for digital communication systems
US7076001B2 (en) * 2001-10-16 2006-07-11 Harris Corporation System and method for an in-service decision-directed signal to noise ratio estimator
KR100927287B1 (ko) * 2001-11-27 2009-11-18 소니 가부시끼 가이샤 안테나 레벨 표시 장치 및 방법, 및 수신 장치
JP4290470B2 (ja) * 2002-05-09 2009-07-08 パナソニック株式会社 受信品質を推定する受信方法および受信装置と、この受信装置を利用した通信システム
DE10302362B4 (de) * 2002-06-28 2007-02-22 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zum Bestimmen einer Rauschgröße eines elektronischen Meßobjektes
US6965242B2 (en) 2002-06-28 2005-11-15 Rohde & Schwarz Gmbh & Co. Kg Procedure and apparatus for the determination of the noise level of an electronic object to be measured
AU2003280499A1 (en) * 2002-07-01 2004-01-19 The Directv Group, Inc. Improving hierarchical 8psk performance
AR040395A1 (es) * 2002-07-03 2005-03-30 Hughes Electronics Corp Metodo y aparato para modulacion por capas
FR2842373B1 (fr) * 2002-07-09 2006-02-03 Imra Europe Sa Procede de selection de signaux d'antennes dans un systeme de diversite d'antennes
KR100461543B1 (ko) * 2002-10-14 2004-12-16 한국전자통신연구원 다중 안테나 고속패킷전송 시스템에서 신호대 간섭비 측정장치 및 그 방법
US7463676B2 (en) * 2002-10-25 2008-12-09 The Directv Group, Inc. On-line phase noise measurement for layered modulation
US7474710B2 (en) * 2002-10-25 2009-01-06 The Directv Group, Inc. Amplitude and phase matching for layered modulation reception
DE60331766D1 (de) * 2002-10-25 2010-04-29 Directv Group Inc Schätzen des arbeitspunkts eines nichtlinearenausbreitungswellenrührenverstärkers
ATE491296T1 (de) * 2002-10-25 2010-12-15 Directv Group Inc Verfahren und vorrichtung zum anpassen von trägerleistungsanforderungen gemäss verfügbarkeit in geschichteten modulationssystemen
US7529312B2 (en) * 2002-10-25 2009-05-05 The Directv Group, Inc. Layered modulation for terrestrial ATSC applications
AU2003301717A1 (en) 2002-10-25 2004-05-25 The Directv Group, Inc. Lower complexity layered modulation signal processor
KR100492004B1 (ko) * 2002-11-01 2005-05-30 한국전자통신연구원 미세전자기계적 시스템 기술을 이용한 고주파 소자
US7502429B2 (en) * 2003-10-10 2009-03-10 The Directv Group, Inc. Equalization for traveling wave tube amplifier nonlinearity measurements
CN104849575B (zh) * 2015-05-25 2017-12-08 南京师范大学 一种基于时频分析的同频辐射噪声源诊断方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0257584A1 (fr) * 1986-08-21 1988-03-02 Nec Corporation Circuit de récupération de porteur insensible à des variations de fréquence interburst
EP0369406A2 (fr) * 1988-11-15 1990-05-23 Nec Corporation Démodulateur cohérent pour modulation à déplacement de phase utilisant le taux d'erreur de bits et le rapport signal/bruit pour établir la synchronisation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238457A (en) * 1963-05-08 1966-03-01 Melpar Inc Signal to noise ratio monitor
US3302116A (en) * 1963-05-16 1967-01-31 Sperry Rand Corp Signal plus noise to noise measuring equipment
US3350643A (en) * 1965-07-15 1967-10-31 James E Webb Signal-to-noise ratio estimating by taking ratio of mean and standard deviation of integrated signal samples
US3529290A (en) * 1968-05-10 1970-09-15 Bell Telephone Labor Inc Nonredundant error detection and correction system
US4124818A (en) * 1977-10-04 1978-11-07 Bell Telephone Laboratories, Incorporated Arrangement for monitoring signal-to-interference ratio in a radio transmission system
FR2419614A1 (fr) * 1978-03-10 1979-10-05 Cit Alcatel Circuit de recuperation de la porteuse d'un signal numerique synchrone transmis par modulation d'amplitude
US4185242A (en) * 1978-03-20 1980-01-22 Bell Telephone Laboratories, Incorporated Signal-to-noise ratio measurement of intermittent signals
US4466108A (en) * 1981-10-06 1984-08-14 Communications Satellite Corporation TDMA/PSK Carrier synchronization without preamble

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0257584A1 (fr) * 1986-08-21 1988-03-02 Nec Corporation Circuit de récupération de porteur insensible à des variations de fréquence interburst
EP0369406A2 (fr) * 1988-11-15 1990-05-23 Nec Corporation Démodulateur cohérent pour modulation à déplacement de phase utilisant le taux d'erreur de bits et le rapport signal/bruit pour établir la synchronisation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2721778A1 (fr) * 1994-06-23 1995-12-29 France Telecom Procédé d'estimation d'une erreur de phase résiduelle sur les échantillons d'un signal numérique démodulé, et procédé de correction correspondant.
WO1996000472A1 (fr) * 1994-06-23 1996-01-04 France Telecom Procede d'estimation d'une erreur de phase residuelle sur les echantillons d'un signal numerique demodule, et procede de correction correspondant

Also Published As

Publication number Publication date
DE3886107D1 (de) 1994-01-20
EP0296822A2 (fr) 1988-12-28
EP0296822B1 (fr) 1993-12-08
EP0497433B1 (fr) 1995-09-20
EP0296822A3 (en) 1989-12-13
DE3886107T2 (de) 1994-05-26
DE3854505T2 (de) 1996-02-22
CA1332450C (fr) 1994-10-11
AU594621B2 (en) 1990-03-08
DE3854505D1 (de) 1995-10-26
AU1824888A (en) 1989-01-05
EP0497433A3 (en) 1992-09-23
US4835790A (en) 1989-05-30

Similar Documents

Publication Publication Date Title
EP0497433B1 (fr) Système de démodulation à phase commandée pour communication numérique
US6473471B2 (en) Slope drift and offset compensation in zero-if receivers
US5412687A (en) Digital communications equipment using differential quaternary frequency shift keying
US5781588A (en) FSK signal receiver
US5553098A (en) Demodulator with selectable coherent and differential data
US5425056A (en) Method and apparatus for generating threshold levels in a radio communication device for receiving four-level signals
US5602879A (en) Clock recovering circuit for digital demodulator
EP0243589B1 (fr) Récepteur radio à système de commande de la récupération de la porteuse
CA1192615A (fr) Circuit de recuperation de porteuse
US7450655B2 (en) Timing error detection for a digital receiver
CA1333922C (fr) Systeme de demodulation commande par la phase pour les communications numeriques
JPH0681162B2 (ja) デ−タ判定回路
JPH098854A (ja) 多値ｆｓｋ受信機
CA2522831C (fr) Compensation de la pente, de la derive et du decalage dans les recepteurs a frequence intermediaire nulle
JP4391433B2 (ja) 回転角度導出装置
KR100327413B1 (ko) 디지털 수신기에서 심벌 동기 회로의 락 검출방법
JP3690810B6 (ja) 無中間周波受信機におけるスロープ、ドリフト及びオフセットの補償方式
JPH0783384B2 (ja) 適応レベル判定電圧の生成方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AC Divisional application: reference to earlier application

Ref document number: 296822

Country of ref document: EP

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB NL

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB NL

17P Request for examination filed

Effective date: 19920817

17Q First examination report despatched

Effective date: 19950116

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AC Divisional application: reference to earlier application

Ref document number: 296822

Country of ref document: EP

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB NL

REF Corresponds to:

Ref document number: 3854505

Country of ref document: DE

Date of ref document: 19951026

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20070614

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20070617

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070620

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20070608

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20080621

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20080622

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20080622

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20080621